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Rear Camera Test
Opens the rear camera on a phone or tablet so you can check focus, exposure and whether the lens is working at all.
Device Tests
Nothing uploaded
No sign-up
Free, unlimited
Press Start to open the rear camera. Nothing is opened until you do.
In short
Rear Camera Test is a free online tool on inputtesthub.com that opens the rear camera on a phone or tablet so you can check focus, exposure and whether the lens is working at all. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Rear Camera Test
- The test starts on its own — no button to press and nothing to install.
- Follow the prompt in the test panel and watch the readings update live.
- Press Reset to start over with a clean slate.
About the Rear Camera Test
The Rear Camera Test opens the rear camera on a phone or tablet so you can check focus, exposure and whether the lens is working at all. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Checking a phone's main camera before buying it second hand.
- Confirming a camera module after a repair.
Explained in our guides
All guidesFrequently asked questions
It opens the front camera instead.
The browser treats the facing request as a preference, not a command. On a desktop with one camera there is nothing to switch to. On a phone, pick the camera you want from the camera list once the test has started.
Does the Rear Camera Test cost anything?
There is no cost and no cap. The Rear Camera Test is not a demo of a paid product, so nothing is held back or watermarked.
Is my data uploaded anywhere?
No. The Rear Camera Test runs entirely in your browser using JavaScript. Because the work happens locally, the page also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What do people use the Rear Camera Test for most?
Typical uses: checking a phone's main camera before buying it second hand. Confirming a camera module after a repair. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Do I need to install anything to run this test?
No installation, no extension and no driver. The Rear Camera Test uses the browser's own device APIs and begins as soon as the page loads, so there is nothing to press first. Press Reset at any point to start over with a clean slate.
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